Improvement in plows



UNITED STATES PATENT OFFICE;

JOHN H. BURGHARDT, OF STOOKBRIDGE, MASSACHUSETTS, ASSIGNOR TO HIMSELFAND V. A. MILES, OF. COPAKE IRON WORKS, NEW YORK.

IMPROVEMENT IN PLOWS.

Specification forming part of Letters Patent No. 214,487, dated April22, 1879 application filed November 8, 1878.

This invention relates to that class of plowsin which the handles aremade adjustable relatively to the plowshare; and consists, mainly,first, in the combination, with the share and handles, of anintermediate metal frame of special construction, by means of which thehandles are properly united to the share; and, second, in thecombination, with I the metal frame, of a guiding-frame upon the share,and devices for lockingthe same in any desired position.

It consists, further, in certain details of construction, all of whichwill be fully described hereinafter.

In the accompanying drawings, Figure 1 represents a side elevation ofthe improved plow; Fig. 2, a plan view of the same; Fig. 3, a plan viewof the metal frame and handles detarmed; Fig. 4, View of the handlesreversed from the frame; and Fig. 5, various views of the frame alone.

To enable others skilled in the art to make and use my improvement inplows, I will now proceed to fully describe the same.

A, Fig. 1, represents the share, and a the beam, which may beconstructed generally in any proper manner.

B, Figs. 2 and 5, represents a metal frame, consisting of the backplate, b, having upon its upper face converging side pieces, N, Fig. 5,with overhanging flange If, by means of which proper recesses are formedfor receiving the lower portions of the handles 0 (l, as shown in Fig.3.

b Figs. 3 and 5, represents a transverse journal or cylinder, providedwith a central opening, as shown, which is located at the lower end ofthe metal frame, and forms a rigid portion of the same, as shown.

I), Fig. 3, represents a transverse shaft or pin, by means of which themetal frame is securely pivoted to the share and mold-board in a properposition between the two, as shown in Fig. 2.

G 0, Figs. 2 and 4, represent the handles before referred to, the lowerportions of which rest in the recesses of the frame, and are stronglyheld thereby.

D, Fig. 1, represents a guiding-frame of any proper form, securelyattached to the share, which is, essentially, provided with a curvedguiding-slot, d, and a rack-bar, d, as shown.

E, Figs. 1 and 2, represents a set-screw extending through the slot intothe metal frame B, and e a washer,-by means of which the handle-frameBisunited to the guide-frame D.

F, Fig. 1, represents a locking -block provided with teeth f and a shankor spindle,

f, by means of which latter and the guideblock f upon the metal frame Bit is held in proper position over the rack-bar.

The operation is substantially as follows, (the plow of course is usedin the ordinary. mannerz) When it is desired to adjust the bandlesrelatively to the share, the locking-block F is lifted to disengage itsteeth from the rackbar, and the handles consequently being free to swingupon the pivot-journal, they may be adjusted, as indicated in dottedlines, Fig. 1, either in a forward or backward direction, as may bedesired.

When properly adjusted the locking-block is permitted to return to itsnormal position for the purpose of securing the handles at the desiredangle.

The locking-block will act simply by gravity; but, if desired, a springmay be employed to give it its return movement.

In addition to the lockin g-block, the setscrew may be employed, ifdesired, to lock the handle firm to the guide-frame.

The advantages of the described construction are simplicity, strength,and ease of adjustment.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In combination with the share and handles, the intermediate metalframe, B, substantially as described, pivoted at its lower Thisspecification signed and witnessed this end to the share, as and for thepurpose set 28th day of October, 1878.

forth. v

2. In combination with the metal frame B, JOHN BURGHARDT having thepivoted journal and handle re- WVitnesses: cesses, as described, thetransverse pin b and WILLIAM A. MILES,

handles 0, as set forth. WILLIAM WRIGHT.

